DPOAE recovery from loud sound exposure

Project Details


In this investigation normal hearing subjects are exposed to sound that causes a temporary threshold shift (TTS), see project "Temporary Threshold Shifts Due to Short Tonal Over-Exposure". Distortion product otoacoustic emissions (DPOAEs) are measured in certain time intervals after the exposure. From these measurements frequency and time specific changes in the OAE recovery are observed. The purpose of this study is to find appropriate measurement parameters for measuring DPOAE changes and to determine the relevant time intervals and frequency range of the changes. The measurements are compared to TTS measurements under the same conditions. Similarities between the temporary shift of DPOAE and TTS have been found in the affected frequency range and the time course of recovery. The amount of TTS is higher in the early recovery time (1-4 minutes post- exposure), but similar to the DPOAE shift (even in absolute terms) at later recovery times (5-20 minutes post-exposure). Supported by PhD scholarship by the Oticon Foundation and STVF/FTP.
Effective start/end date31/12/200831/12/2008


Assessment of risk of noise induced hearing damage

de Toro, M. A. A., Reuter Andersen, K., Hammershøi, D. & Ordoñez, R.


Project: Research

Effects of over-exposure on the DPOAE fine structure

Reuter Andersen, K., de Toro, M. A. A., Ordoñez, R. & Hammershøi, D.

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Project: Research

  • Research Output

    • 2 Article in proceeding
    • 1 Journal article

    Overexposure effects of a 1-kHz tone on the distortion product otoacoustic emission in humans

    Reuter, K., Ordoñez, R. P. & Hammershøi, D., 2007, In : Journal of the Acoustical Society of America. 122, 1, p. 378-386

    Research output: Contribution to journalJournal articleResearchpeer-review

  • A model of recovery for absolute thresholds and distortion product otoacoustic emissions after high level tonal exposures

    Ordonez, R., Reuter, K. & Hammershøi, D., 2004, Proceedings of Inter-Noise 2004.

    Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearch

    DPOAE recovery from tonal over-exposure in normal hearing humans

    Reuter, K. & Hammershøi, D., 2003, Proceedings of XVIII IERASG Biennial Symposium, June 8-12, 2003, Puerto de la Cruz, Tenerife, Canary Islands, Spain. p. 62-

    Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearch